71 citations · 184 across the 5 of their papers we have counts for
8 papers
Why dynamos are prone to reversals
Frank Stefani, Gunter Gerbeth, Uwe Guenther +1
In a recent paper (Phys. Rev. Lett. 94 (2005), 184506; physics/0411050) it was shown that a simple mean-field dynamo model with a spherically symmetric helical turbulence parameter…
MHD alpha^2-dynamo, Squire equation and PT-symmetric interpolation between square well and harmonic oscillator
Uwe Guenther, Frank Stefani, Miloslav Znojil
It is shown that the alpha^2-dynamo of Magnetohydrodynamics, the hydrodynamic Squire equation as well as an interpolation model of PT-symmetric Quantum Mechanics are closely relate…
AdS and stabilized extra dimensions in multidimensional gravitational models with nonlinear scalar curvature terms 1/R and R^4
Uwe Guenther, Alexander Zhuk, Valdir Bezerra +1
We study multidimensional gravitational models with scalar curvature nonlinearities of the type 1/R and R^4. It is assumed that the corresponding higher dimensional spacetime manif…
Massive scalar fields in the early Universe
Uwe Guenther, Alexander Zhuk
We discuss the role of gravitational excitons/radions in different cosmological scenarios. Gravitational excitons are massive moduli fields which describe conformal excitations of…
Isospectrality of spherical MHD dynamo operators: pseudo-Hermiticity and a no-go theorem
U. Guenther, F. Stefani
The isospectrality problem is studied for the operator of the spherical hydromagnetic alpha^2-dynamo. It is shown that this operator is formally pseudo-Hermitian (J-symmetric) and…
Comment on stability of atoms and nuclei in multidimensional TeV scale gravity
U. Guenther, A. Kuklov, A. Zhuk
We discuss the stability of atoms and nucleons in the presence of multidimensional gravity characterized by the unified energy scale 1TeV. We point out that the multidimensional gr…